Oklahoma City fire crews battled a blaze at an apartment complex Monday afternoon, according to firefighters.

The fire began about 1 p.m. at Northwest 10th Street and Greenvale Road.

The apartments are vacant, according to Chief Marc Woodard. According to authorities, firefighters had a hard time getting the blaze extinguished and extra fire units were called to the scene for relief of other units.

The roof of the structure collapsed, Woodard said. The fire is now under control and no one was injured.